Aetosauriformes (Contour 2) is different from other archosaur clades for the having the https://datingranking.net/tr/adventist-singles-inceleme/ second unique blend of character states (Nesbitt, 2011 ; Butler mais aussi al., 2014 ; ; this study): convex distal side of distal maxillary teeth (distributed to some loricatans as well as crocodylomorphs); circular and thicker factors for the medial area of the posterior procedure for the newest squamosal for the paroccipital procedure (distributed to Turfanosuchus dabanensis); diapophysis and you will parapophysis with the middle trunk vertebrae expanded into the stalks (shared with ornithischian dinosaurs, ornithosuchids, Elizabeth. okeeffeae, and you can crocodyliforms); distance try quicker than 80% of duration of the fresh new humerus (shared with Dinosauria, Protosuchus richardsoni, and you will Alligator mississippiensis); and presacral paramedian osteoderms is mediolaterally wide than just anteroposteriorly enough time (shared with Riojasuchus tenuisceps, protosuchid crocodyliforms, phytosaurs, in addition to archosauriform V. campi); horizontal osteoderms introduce through the all of the carapace (distributed to erpetosuchids, An effective. geoffreyi and you may aetosaurians).
We end that the prognosis of one’s genus isn’t alternative and you may restricted to brand new genus because originally identified by Hunt ( 1989 ) and revised of the Heckert mais aussi al., ( 2012 ) (look for cause less than). callenderi according to the holotype and you may referred point.
Modified medical diagnosis
R. callenderi possesses the following unique combination of profile claims (autapomorphies ; ): maxillary teeth well inset throughout the horizontal margin of your own skull (= buccal emargination) (shared with ornithischian dinosaurs); haphazard patterning to your dorsal skin of square paramedian osteoderms (instead of radial patterning; distributed to T. coccinarum); skull size exceeds regarding the newest femur (distributed to phytosaurs, proterochampsids, and you may pterosaurs) where the femur are
61% along the fresh new head; descending means of the fresh nose suits into the a beneficial concave socket toward the latest premaxilla (distributed to T. dabanensis); small additional nares (maximum aspect
1/3 the size of new orbit anteroposterior duration)*; rear procedure for jugal matches towards the a v-formed slot on the quadratojugal*; strongly verticalized parabasisphenoid (basitubera was dorsal on the pterygoid techniques) (distributed to particular loricatans); average pharangeal recess of parabasisphenoid split up by the a robust straight ridge*; exterior epidermis of squamosal laterally displaced with respect to the quadrate (shared with aetosaurs, Gracilisuchus stipanicicorum, and Tarjadia ruthae); posterior caudal osteoderms bonded on a good tube*; dorsal eminence of one’s paramedian osteoderms offset laterally in the osteoderm center; horizontal osteoderms which can be markedly oblong (rather than equant or nearly equant) (distributed to erpetosuchids); revealing band of ventral osteoderms (distributed to aetosaurs, for example, S. robertsoni).
cuatro.6 Introduced specimens
So it osteological description depends mainly towards the: PEFO 33787, PEFO 33788, partial skull; PEFO 33789, correct scapulocoracoid; PEFO 33819, a couple of sacral centra; PEFO 33845, remaining rear portion of the iliac blade; PEFO 33847, bonded gastralia; PEFO 33848, dorsal rib; PEFO 33861, cervical vertebra; PEFO 33870, partial manus; PEFO 33874, left and you will correct frontals; PEFO 33875, sacral centrum; PEFO 33876, limited correct ilium; PEFO 33892, right ilium; PEFO 33894, left ilium; PEFO 34056, limited proper ilium; PEFO 34269, partial skeleton and you can skull; PEFO 34273, kept tibia; PEFO 34274, leftover maxilla and you can lacrimal; and you will PEFO 34561, almost done skull and you can associated skeleton; PEFO 34570, partial braincase; PEFO 34833, articulated cervical spinal vertebrae; PEFO 36875, almost done skull and you may related specimen; PEFO 36876, partial skeleton; PEFO 42442/UWBM 116869, mostly complete bones; PEFO 38609, over head; PEFO 33791, best ilium; and you may PEFO 33991, correct ilium. More trick specimens tend to be NMMNH P-16932, limited skeleton (Have a look mais aussi al., 2005 ), or other NMMNH specimens placed in Heckert ( 2002 ). New unmarried feature specimens listed above matches facets found in the partial associated skeletons which means was unambiguously assignable so you can Reveueltosaurus callenderi. A full variety of specimens labeled Roentgen. callenderi exists into the Analysis S1 and linear size of relevant specimens are offered inside Data S2. Discover 3d activities of PEFO 34561 are supplied when you look at the Data S4.